Answer
code
Work Step by Step
# 13.4 (Write/read data) Write a program that writes 100 integers created randomly into
# a file. Integers are separated by a space in the file. Read the data back from the file
# and display the sorted data. Your program should prompt the user to enter a filename.
# If the file already exists, do not override it.
import os
import random
import sys
filename = input("Enter a filename: ").strip()
if os.path.isfile(filename):
print("The file already exists")
sys.exit()
file = open(filename, 'w')
for i in range(100):
file.write(str(random.randint(0, 100)) + " ")
file.close()
file1 = open(filename, 'r')
nums = []
for line in file1:
nums = line.split()
nums = [eval(x) for x in nums]
nums.sort()
for n in nums:
print(n, end=' ')
